/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.metamodel.util;

import java.util.function.Function;

/**
 * Represents a {@link Function} that allows for throwing checked exceptions,
 * making it more appropriate for encapsulating code blocks that may fail.
 * 
 * @param <I>
 * @param <O>
 */
@FunctionalInterface
public interface UncheckedFunc<I, O> extends Function<I, O> {

    @Override
    public default O apply(I arg) {
        try {
            return applyUnchecked(arg);
        } catch (Exception e) {
            if (e instanceof RuntimeException) {
                throw (RuntimeException) e;
            }
            throw new RuntimeException(e);
        }
    }

    public O applyUnchecked(I arg) throws Exception;
}
